IBM Support

OA37647: REDUCE CPU OVERHEAD FOR OMEGAMON II STORAGE LIGHT

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Reduce cpu overhead for Omegamon II Storage light when
    real storage thresholds are not set.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All OMEGAMON II for MVS V550 users.          *
    ****************************************************************
    * PROBLEM DESCRIPTION: 1. High cpu usage in the Omegamon       *
    *                         Realtime Collector task when the     *
    *                         Omegamon II Storage light is         *
    *                         refreshed.                           *
    *                      2. High cpu usage in the Omegamon       *
    *                         Realtime Collector or TEMS tasks     *
    *                         when the XCSA or XECS exceptions are *
    *                         invoked.                             *
    ****************************************************************
    * RECOMMENDATION: Apply the PTF.                               *
    ****************************************************************
    1. In environments with a large amount of real storage, the
       code to report on real storage frames can use a lot of cpu.
       The code is run even when the thresholds for real storage
       use are not enabled.
    2. The XCSA and XECS exceptions scan through every block of
       CSA and ECSA storage which can be cpu intensive.
    

Problem conclusion

  • 1. Modify the code to only run the real storage analysis when
       the following Omegamon II real storage thresholds are set:
       Central storage online, Available frame queue low
    2. Modify the code to use CSA/Analyzer data if available
       instead of scanning common storage control blocks.
    550Y
    KM2001D
    KOMPWAI5
    KOMWLM5
    KOMXSY5
    

Temporary fix

  • *********
    * HIPER *
    *********
    UNTIL THIS PTF IS APPLIED, THE FOLLOWING ACTIONS CAN REDUCE CPU.
    IN OMEGAMON II, TURN OFF THE STORAGE LIGHT
    IN THE TEP, DISABLE OR INCREASE THE INTERVAL TIME FOR SITUATIONS
    THAT MONITOR COMMON STORAGE.
    

Comments

APAR Information

  • APAR number

    OA37647

  • Reported component name

    OMEG II FOR MVS

  • Reported component ID

    5608A0400

  • Reported release

    550

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-09-23

  • Closed date

    2011-10-28

  • Last modified date

    2011-12-01

  • APAR is sysrouted FROM one or more of the following:

    OA37619

  • APAR is sysrouted TO one or more of the following:

    UA62873

Modules/Macros

  •    KM2001D  KOMPWAI5 KOMWLM5  KOMXSY5
    

Fix information

  • Fixed component name

    OMEG II FOR MVS

  • Fixed component ID

    5608A0400

Applicable component levels

  • R550 PSY UA62873

       UP11/11/02 P F111

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSNU68","label":"Tivoli OMEGAMON II for MVS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"550","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Document Information

Modified date:
01 December 2011